DotNetRemoting SDK for .NET allows to build Bidirectional network applications.Major features: Bidirectional, Firewall transparancy, Http, TCP, UDP, GPRS,Encryption, serialization. On mobile devices it supports GPRS based connection, Wi-Fi and any other socket based connection. Http based componets support http requests and responses. On PDA it is faster than standard webservices by times (depending on the object sent/received).

HS GPS is a software library (with full C source code) which provides access to a NMEA-183 compliant GPS receiver via a serial communications port, decoding NMEA sentences: $GPGGA, $GPGSA, $GPGSV, $GPGLL, $GPRMC and $GPVTG. Decoded parameters include: time, date, position, altitude, speed, course and heading, according to standard - NMEA-183 (National Marine Electronics Association, Interface Standard 0183.)